[单选题]
The distance between ad(zz imh9 v/tpal6;1 majacent orbit radii in a 5)rr6j-zjg *nixq ;rb z4n o76zegz2t hydrogen atom
A. increases with increasing values of n.
B. decreases with increasing values of n.
C. remains constant for all values of n.
D. varies randomly with increasing values of n.